Radio control planes/copters/quadcopters

joebedford wrote:
I suspect radio standards vary from location to location but current technology is 2.4Ghz shared spectrum.

FUTUBA and a few others are out there, but by far the most popular is Spektrum. They have made improvements on the modulation the 1st was DSM, then DSM2, now DSMX. Hanging out flags and frequency jamming is long gone. These days you can fly several hundred models in the same space, but being in the 2.4GhZ spectrum has brought some very occasional packet losses from WiFi, or some other control or data service co-channeled. DSMX is a true spread spectrum frequency hopper, which further reduces the problem.